Air conditioner indoor unit



FIG. 1 is a front elevation view of an air conditioner indoor unit, showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a first perspective view thereof; and,

FIG. 8 is a second perspective view thereof.

The broken lines in the drawings illustrate portions of the air conditioner indoor unit which form no part of the claimed design. 

CLAIM The ornamental design of an air conditioner indoor unit, as shown and described. 